Mining billionaire Gina Rinehart will hit the speaking circuit on Thursday to discuss how Australians can join her in becoming rich.

Mrs Rinehart caused international headlines in September when she hit out at the high costs of operating mines in Australia and pointed out that African workers earned just $2 a day.

The mining magnate will on Thursday launch a book she has written called Northern Australia and then some: Changes we need to make our country rich. The book was kept under wraps yesterday, but one of Mrs Rinehart's most trusted lieutenants described it as an absorbing read.

“It’s an interesting book and it covers her thoughts on how we can grow this country into something bigger," Hancock Prospecting executive director Tad Watroba said.

“It will cover all of the themes she has been discussing in speeches and articles in the last year or so."

Private events are being held in Brisbane and Sydney on Thursday, and a whirlwind book tour will take place in Melbourne and Perth on Friday.